world leaders will attend including president obama. >>> in june of 1994, months after he was released from prison, nelson mandela visited the united states. more than 70,000 people packed the open coliseum here to see him. and as kpix 5's christin ayers explains, he came because the east bay was the leader in the apartheid movement. >> reporter: a memorial of nelson mandela and a host of other humanitarian giants. >> it is you the people of oakland, the people of the bay area, who have given me and my delegation the hope to continue the struggle. >> reporter: it was no accident that nelson mandela made oakland the final stop on his 1990 u.s. freedom tour. >> the east bay was a center of the test to change the south african government and get rid of apartheid. >> reporter: ron dellums was the first to introduce antiapartheid legislation in 1972 and 7 years later berkeley became the first in the nation to divest from south africa. >> in the '80s the divestment movement on the campus began in force. >> reporter: assemblywoman nancy skinner was part of the movement. sit-ins and mass arres